The invention belongs to the technical field of planting, and discloses a method for promoting the growth of an
atractylodes lancea plant by inoculating
arbuscular mycorrhizal fungi, and the inoculating method comprises the following steps: step 1, obtaining the
arbuscular mycorrhizal fungi, step 2, preparing a sterilization matrix, step 3, carrying out mixed planting, step 4, preparing a microbial inoculum, and step 5, inoculating the microbial inoculum. According to the method provided by the invention, the
mycorrhiza infection rate of the rhizoma atractylodis chinensis
root system can reach 100%, and the
biomass of the rhizoma atractylodis chinensis is remarkably improved; the dependence of the current year and annual
atractylodes lancea on
mycorrhiza reaches 36% and 52% respectively, and the
dry weight of the whole
plant is increased by 56.2% and 108.4% respectively; meanwhile, the
root length and the
root surface area of the next-year
atractylodes lancea inoculated with the inoculant are obviously higher than those of the non-inoculated atractylodes lancea; mycorrhizal seedlings formed by the method have good growth vigor and well-developed root systems, and the adaptability and the
survival rate of rhizoma atractylodis chinensis are improved.